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mr Goodwill [35]
3 years ago
7

Please try to make the answer short if you can! && it’s worth ten points!

Mathematics
1 answer:
strojnjashka [21]3 years ago
5 0

Answer:

A: 105 degree turn

Step-by-step explanation: If you were going east the it would be 75 except for the fact that since you are going west it would be supplementary

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ElenaW [278]
All real numbers / all x 
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Given: BD is a diameter<br> m 1 = 100°<br> m BC= 30°<br><br> m ADB=<br><br> 160<br> 280<br> 330
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Answer:

280

Step-by-step explanation:

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A man can drive a motorboat 70 miles down the Colorado River in the same amount of time that he can drive 40 miles upstream. Fin
pochemuha

The speed of the current is 40.34 mph approximately.

<u>SOLUTION: </u>

Given, a man can drive a motorboat 70 miles down the Colorado River in the same amount of time that he can drive 40 miles upstream.  

We have to find the speed of the current if the speed of the boat is 11 mph in still water. Now, let the speed of river be a mph.  Then, speed of boat in upstream will be a-11 mph and speed in downstream will be a+11 mph.

And, we know that, \text{ distance } =\text{ speed }\times \text{ time }

\begin{array}{l}{\text { So, for upstream } \rightarrow 40=(a-11) \times \text { time taken } \rightarrow \text { time taken }=\frac{40}{a-11}} \\\\ {\text { And for downstream } \rightarrow 70=(a+11) \times \text { time taken } \rightarrow \text { time taken }=\frac{70}{a+11}}\end{array}

We are given that, time taken for both are same. So \frac{40}{a-11}=\frac{70}{a+11}

\begin{array}{l}{\rightarrow 40(a+11)=70(a-11)} \\\\ {\rightarrow 40 a+440=70 a-770} \\\\ {\rightarrow 70 a-40 a=770+440} \\\\ {\rightarrow 30 a=1210} \\\\ {\rightarrow a=40.33}\end{array}

8 0
3 years ago
A ball is dropped from 45 feet above the ground. With each bounce, its max height is 80% of its previous height. What is the bal
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Answer:

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Here the <u>benefit of a certain investment will be compared in contrast to the money invested.  </u>

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